As per US import data provided by Zauba.com, the top products imported from San Marino to the USA by Twenty-foot Equivalent Unit (TEU) volume are Groundnuts (HS Code 1202), Worked Monumental or Building Stone (HS Code 6802), and Refined Copper and Copper Alloys, Unwrought (HS Code 7410). Specifically, Groundnuts (HS Code 1202) accounts for the highest TEU with 7462.67 TEU, followed by Worked Monumental or Building Stone (HS Code 6802) with 5322.91 TEU, and Refined Copper and Copper Alloys, Unwrought (HS Code 7410) with 1118.70 TEU.